Filter

Voltage Controlled Filters (VCF's) attenuate (reduce) frequencies below, (high-pass HPF), above, (low-pass, LPF) or both below and above, (band-pass, BPF) a certain frequency. VCF's can also be configured to provide band-exclusion (BEF), whereby the high and low frequencies remain while the middle frequencies are removed. (Excerpted from this Wikipedia page)

For more modules, see: Modules by Function